Home / 691,147.45-1,036,721.18-292,238.65

Finding the Fourth Proportional to 691,147.45, 1,036,721.18 and 292,238.65

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Solution

The fourth proportional to 691,147.45, 1,036,721.18 and 292,238.65 is: 438,357.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,147.45 : 1,036,721.18 = 292,238.65 : x
  2. Step 2: Convert to fraction form
    691,147.45/1,036,721.18 = 292,238.65/x
  3. Step 3: Cross multiply
    691,147.45x = 1,036,721.18 × 292,238.65
  4. Step 4: Simplify right side
    691,147.45x = 302,969,998,069.61
  5. Step 5: Solve for x
    x = 302,969,998,069.61/691,147.45
  6. Step 6: Final answer
    x = 438,357.98

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.